EP1116607A1 - Im vulkanisierten Zustand als Notlaufring für Reifen geeignete Kautschukzusammensetzung und solch ein Notlaufring - Google Patents

Im vulkanisierten Zustand als Notlaufring für Reifen geeignete Kautschukzusammensetzung und solch ein Notlaufring Download PDF

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Publication number
EP1116607A1
EP1116607A1 EP01100661A EP01100661A EP1116607A1 EP 1116607 A1 EP1116607 A1 EP 1116607A1 EP 01100661 A EP01100661 A EP 01100661A EP 01100661 A EP01100661 A EP 01100661A EP 1116607 A1 EP1116607 A1 EP 1116607A1
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EP
European Patent Office
Prior art keywords
support
partitions
rubber composition
rim
junction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01100661A
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English (en)
French (fr)
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EP1116607B1 (de
Inventor
Francois Masson
Francois Bataille
Serge Teisseyre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
Original Assignee
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
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Filing date
Publication date
Application filed by Michelin Recherche et Technique SA Switzerland, Michelin Recherche et Technique SA France, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP1116607A1 publication Critical patent/EP1116607A1/de
Application granted granted Critical
Publication of EP1116607B1 publication Critical patent/EP1116607B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
    • B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
    • B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
    • B60C17/061—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient comprising lateral openings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T152/00—Resilient tires and wheels
    • Y10T152/10—Tires, resilient
    • Y10T152/10495—Pneumatic tire or inner tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]

Definitions

  • the present invention relates to a rubber composition which can be used in the state vulcanized as a safety support intended to be mounted on a wheel rim inside a tire casing, such a support being able to support a tread of said casing in the event of a drop in inflation pressure, a process for preparing said casing composition, and a mounted assembly comprising this support.
  • the safety supports for vehicle tires are intended to be mounted on a rim inside the tire, in order to be able to support the strip of rolling of this tire in the event of loss of inflation pressure.
  • These supports include in particular a base which is intended to fit around the rim, and a top which is intended to come into contact with the tread in the aforementioned case and which leaves a guard against it at nominal pressure.
  • Japanese patent document JP-A-3/82601 has such support, the base and the apex are substantially cylindrical, and which further comprises an annular body connecting said base and said vertex.
  • This support is carried out essentially with a hard polymeric material and the assembly of the support member is designed to support the compressive load.
  • Such supports can be produced in the usual way by injection into a mold, by example.
  • compositions which are intended to constitute a part tire casing and which have improved stiffness characteristics.
  • the compositions described in this document include in particular an elastomer matrix in which polypropylene fibrils are randomly dispersed, the length does not exceed 15 ⁇ m, and a reinforcing filler.
  • compositions lie in their reduced resistance to rupture under elongation, compared to a “control” composition devoid of these fibrils polypropylene (the maximum elongation modulus at break is less than a third of the corresponding module of said “witness” composition). These compositions are not adapted to constitute safety supports.
  • the aim of the present invention is to provide a rubber composition, usable in the vulcanized state as a safety support intended to be mounted on a wheel rim inside a tire, said composition comprising at least one diene elastomer, which is such that for said support, the lightening performance, over time comparable flat running life, further improved.
  • the invention also relates to rubber compositions in the state unvulcanized only in the vulcanized state.
  • elastomer is understood in a known manner diene an elastomer derived at least in part (i.e. a homopolymer or a copolymer) from diene monomers (monomers carrying two carbon-carbon double bonds, conjugated or not).
  • said elastomer (s) consist of at least minus an essentially unsaturated diene elastomer.
  • said composition comprises a single diene elastomer which is made entirely of natural rubber or polyisoprene synthetic.
  • Said composition can then comprise, for example, a cut of approximately 60 pce natural rubber and about 40 phr of polybutadiene.
  • the reinforcing filler of a rubber composition according to the invention comprises preferential title, a majority reinforcing white filler, that is to say according to a mass fraction greater than 50%.
  • White reinforcing filler is understood to mean a white filler capable of reinforcing alone, with no other intermediary than a white charge / elastomer (s) a rubber composition intended for the manufacture of tires, in other terms capable of replacing a charge in its reinforcing function conventional pneumatic grade carbon black.
  • Such a reinforcing white filler can for example consist of silica, and it is advantageously present in said composition in an amount ranging from 60 to 80 phr and, even more advantageously, in an amount ranging from 65 to 75 phr.
  • silica capable of being used all precipitated or pyrogenic silicas known to those skilled in the art are suitable, which have a BET or CTAB surface of a value greater than 100 m 2 / g, even if the highly precipitated silicas dispersible are preferred.
  • highly dispersible silica any silica having a very important for disagglomeration and dispersion in an elastomeric matrix, observable in a known manner by electron or optical microscopy, on fine sections.
  • highly dispersible silicas usable for the invention mention may be made of the silica BV 3370 and BV 3380 from the company Degussa, the silica Zeosil 1165 MP and 1115 MP from Rhodia, silica BXR 160 from PPG, or Zeopol 8745 M silica from Huber.
  • a silica is used whose BET or CTAB surface value is between 110 and 200 m 2 / g and, even more preferably, between 140 and 195 m 2 / g.
  • the physical state of the silica is indifferent, whether in powder form, microbeads, granules, beads.
  • silica is also meant blends of different silicas.
  • the silica can be used alone or in the presence of other white fillers.
  • the value of the surface specific CTAB is determined according to the method of standard NFT 45007 of November 1987.
  • the value of the BET specific surface is determined according to the method of BRUNAUER, EMMET and TELLER which is described in "The Journal of the American Chemical Society, vol. 80, p. 309 (1938) ", corresponding to standard NFT 45007 of November 1987.
  • the reinforcing filler used for the composition of the invention may comprise carbon black of grade 6 or grade 7 on a minority basis, that is to say according to a fraction mass less than 50%.
  • carbon black of grade 6 or grade 7 on a minority basis, that is to say according to a fraction mass less than 50%.
  • reinforcing filler cuts carbon black / silica, or carbon blacks partially or fully coated with silica.
  • the rubber composition according to the invention further comprises so conventional, when said reinforcing filler comprises a white reinforcing filler, a reinforcing white filler / elastomer (s) bonding agent (also called coupling agent), which has the function of ensuring a sufficient bond (or coupling), of chemical nature and / or physical, between said white charge and said elastomer (s), while facilitating the dispersion of this white charge within this or these latter.
  • a reinforcing filler comprises a white reinforcing filler, a reinforcing white filler / elastomer (s) bonding agent (also called coupling agent), which has the function of ensuring a sufficient bond (or coupling), of chemical nature and / or physical, between said white charge and said elastomer (s), while facilitating the dispersion of this white charge within this or these latter.
  • linkers of variable effectiveness, have been described in a very large number of documents and are well known to those skilled in the art.
  • polysulphurized alkoxysilanes are used, as described for example in patent documents US-A-3,842,111, US-A-3,873,489, US-A-3,978,103, US-A-3 997 581, US-A-4 002 594 or, more recently, US-A-5 580 919, US-A-5 583 245, US-A-5 663 396, US-A-5 684 171, US-A-5 684 172, US-A-5 696 197, which describe in detail such known compounds.
  • n is a fractional number, preferably ranging from 2 to 5.
  • polysulphurized alkoxysilanes mention will be made more particularly of polysulphides (in particular tetrasulphides) of bis (alkoxyl (C 1 -C 4 ) -silylpropyl), in particular of bis (trialkoxyl (C 1 -C 4 ) -silylpropyl), in particular polysulphides bis (3-trimethoxysilylpropyl) or bis (3-triethoxysilylpropyl).
  • TESPT bis (3-triethoxysilylpropyl) tetrasulfide
  • Si69 or X50S when supported at 50% by weight on carbon black
  • Silquest A1289 a bis (3-triethoxysilylpropyl) tetrasulfide
  • the content by weight of coupling agent can be in a range from 2 to 15% relative to the mass of reinforcing white filler and, preferably, in a range of 5 to 12%.
  • sulfur content in the composition according to the invention it will be noted as preferential that it can vary from 4 to 6 pce.
  • the rubber compositions according to the invention contain, in addition to said or said elastomers, said reinforcing filler and optionally one or more bonding agents reinforcing white filler / elastomer (s), all or part of the other constituents and additives usually used in rubber mixtures, such as plasticizers, pigments, antioxidants, vulcanization accelerators, extension oils, one or more agents covering of the reinforcing white filler, such as alkoxysilanes, polyols, amines, etc ...
  • said ⁇ -olefin polymer is made of isotactic polypropylene.
  • said ⁇ -olefin polymer is dispersed in said elastomer (s) in the form of substantially spherical particles.
  • said rubber composition has a modulus of elasticity M10 at 10% deformation which is greater than 10 MPa and which is preferably greater than 15 MPa.
  • said composition preferably has an M10 module of, for example, between 25 and 35 MPa.
  • a safety support according to the invention is such that it consists of said composition rubber of the invention.
  • said annular body also comprises on one of said sides of the support junction elements extending substantially circumferentially, each junction element connecting together the respective ends of two adjacent partitions which are arranged on said side of the support, said junction elements being successively arranged alternately on either side of said partitions.
  • junction elements are mutually supported, between two adjacent partitions, by a rib extending from said top to said base of the support, such that said junction elements form a continuous junction wall in bellows shape on all of said side of said support.
  • said junction wall comprises a plurality of cells which are each delimited by two adjacent ribs, the bottom of each cell having substantially a form of dihedral whose edge is formed by one of said partitions and whose the faces are respectively formed by said alternating junction elements.
  • said annular body also includes, on both sides of the support, junction elements extending substantially circumferentially, each junction element connecting together the two respective ends of two adjacent partitions which are arranged in the same side of the support, said junction elements being arranged successively alternately on either side of said partitions.
  • said partitions are adapted in their central part relative to their side ends to enhance resistance to buckling under a radial loading of the annular body.
  • the central part of the partitions of the support element is distant from joining elements and can be destroyed during rolling in support by the appearance of a repeated buckling deformation.
  • a repeated buckling deformation results in rolling a initiation and propagation of cracks on the side of the extended walls.
  • a deformation of buckling causes the appearance of plastic deformations.
  • the ratio between the thickness of the partitions in their central part and their ends lateral is greater than 1.1 and preferably greater than 1.5. This variation in thickness very significantly increases the buckling resistance of the central part of the partitions and thus allows, at a given radial load, to limit the thickness of the junction elements and to lighten the total weight of the support.
  • partitions have, from one lateral end to the other, at least one inversion and, preferably, three inversions of the direction of their curvature.
  • partitions for example have a central portion extending substantially axially between two lateral parts, these lateral parts joining the junction elements making with the circumferential direction an angle ⁇ ranging from 20 to 40 degrees.
  • the partitions have, in their central area, two parts extending substantially axially and circumferentially offset one by relation to the other, as well as a third junction part.
  • the variation ⁇ of orientation average between this third junction part and the two orientation parts substantially axial is preferably greater than 20 degrees.
  • Each joining element can be supported, on one side or on both sides of the support element, by at least one wall extending substantially axially towards outside the annular body.
  • These axial walls are not very sensitive to buckling because they are integral with the support member and relatively short. These axial walls allow, at iso-width support, reduce the width of the support element and therefore increase its resistance to buckling.
  • each junction element forms with a axial wall which the shoulder and the lateral ends of the two adjacent partitions a set star-shaped with three branches, and the axial width of an axial wall is less than or equal to half the axial width of the two adjacent partitions of the support element.
  • the support elements according to the invention may also include a veil substantially cylindrical and coaxial with the support, which for example is arranged radially at half of the support element.
  • This veil is made of the same material as the rest of the annular body. It allows, when it is placed halfway up, halve the height of the partitions and so increase the buckling limit load by a factor of approximately four.
  • the different geometries of the support elements are adapted to include no undercut parts opposing an axial release of the support.
  • an assembly mounted according to the present invention for a vehicle automobile is of the type comprising a wheel rim, a tire casing mounted on said rim and said support according to the invention, said rim comprising in each of its two peripheral edges a rim seat intended to receive a bead of said envelope, said rim comprising, between its two seats, on the one hand, a seat and, on the other hand, a groove mounting connecting said bearing to an axially internal rim of one of said seats, or first seat.
  • Fig. 2 illustrates in particular the function of a support 1 which is to support the strip of tire rolling in the event of a large loss of inflation pressure.
  • each assembled assembly tested (respectively casing width - casing diameter - rim diameter) are, in mm: 205 - 650 - 440.
  • This first witness support is characterized by a modulus of elasticity M10 substantially equal to 9 MPa (M10 being the usual abbreviation which designates a secant extension module obtained at a deformation of the order of 10%, at room temperature and in the third cycle of solicitation, according to ISO 37-1977).
  • This support has a known architecture, which is illustrated in FIG. 13, related with Figs. 1 and 2.
  • FIG. 2 shows a first massive part 4a of the annular body 4 thus that a second part 4b consisting of recesses (see also Fig. 1) extending axially over substantially more than half of the annular body 4, opening on the side outside in a substantially axial direction.
  • These recesses 4b are regularly distributed over the entire circumference of the annular body 4 and they define partitions 6, which provide a direct radial connection between the top 2 and the base 3 of the support 1.
  • This geometry has the advantage of stressing in bending and not in compression these partitions 6 when overwritten.
  • the recesses 4b and therefore the partitions 6 are Enough enough to provide regular support when rolling under pressure.
  • this first control support 1 which has been tested comprises, on its circumference, 38 partitions 6 which each have a thickness of 18 mm, and which are two to two 38 mm apart.
  • the base 2 and the top 3 have thicknesses which are respectively equal to 7 mm and 8 mm.
  • the annular body 4 of this first witness support 1 it has a width (in the axial direction) equal to 35 mm.
  • the mass of this first witness support is 8 kg.
  • a second witness support which was integrated into the aforementioned mounted assembly for the test of run-flat consists of a differentiated vulcanized rubber composition only that of the first witness support, in that it includes a cutting of natural rubber (60 pce) and polybutadiene (40 pce), architecture, dimensions and mass of this support being identical to that of said first witness support.
  • This second witness support is characterized by substantially the same module M10 as said first witness support.
  • the particle size distribution of the particles was determined by a sieving technique.
  • polypropylene powder which have been introduced into the mixer by evaluating, for a given initial mass of polypropylene, sieving refusals during successive passes to through sieves. We did this according to ISO-1435 and NF-14001 standards.
  • This size distribution was as follows for each sieve, in cumulative mass fractions relative to the initial mass of polypropylene: size ⁇ 45 ⁇ m 0.09% size ⁇ 125 ⁇ m 5.9% size ⁇ 180 ⁇ m 11.4% size ⁇ 315 ⁇ m 38.3% size ⁇ 400 ⁇ m 73.9% size ⁇ 500 ⁇ m 99.9% size ⁇ 630 ⁇ m 100%.
  • the weight average size of said particles in the rubber composition according to the invention is between 50 ⁇ m and 500 ⁇ m.
  • each support of the invention has a mass of 5 kg which is significantly reduced by a third, compared to the mass equal to 8 kg of each of the supports witness. It will therefore be noted that such a support according to the invention has a mass reduced compared to supports not comprising such a dispersion.
  • each support according to the invention is characterized by a module M10 of approximately 30 MPa, which gives it a rigidity greater than that of supports without said dispersion.
  • the reinforcing white filler such as silica
  • the rubber composition of each support according to the invention provides this composition, on the one hand, with an ability to be used raw improved and, on the other hand, also improved baking properties, such as cohesion, in addition to the above rigidity.
  • a safety support 1 according to FIG. 3 is of the type comprising said base 2, said base crown 3 and said annular body 4.
  • a support element 7 of this preferential support 1 which is circumferentially continuous, said support member comprising a plurality of partitions 6 extending axially on either side of the circumferential median plane P of the support 1 and being distributed over the circumference of said support 1.
  • this support element 7 comprises, on one of said sides of the support 1, junction elements 8 extending substantially circumferentially.
  • Each junction element 8 interconnects the respective ends 6a of two partitions 6 adjacent which are arranged on said side of the support 1, and said junction elements 8 are successively arranged alternately on either side of said partitions 6.
  • junction elements 8 are mutually supported, between two adjacent partitions 6, by a rib 8a extending from said apex 3 to said base 2 of the support 1, so that said junction elements 8 form a junction wall continues 9 in the form of a bellows over all of said side of said support 1.
  • said junction wall 9 comprises a plurality of cells 9a which are each delimited by two adjacent ribs 8a.
  • the bottom of each cell 9a has a substantially dihedral shape, the edge of which is formed by an end 6a of partition 6, and the faces of which are respectively formed by said junction elements 8 alternated.
  • the partitions 6 of the support 1 are at number of 40 on the circumference of said support 1, each has a thickness of 8 mm, and they are 40 mm apart. And as was said above for each support 1 tested, it has a width of 135 mm, a diameter of 440 mm and a height of 50 mm.
  • the base 2 and the top 3 of said support 1 have thicknesses respectively equal to 6 mm and 7 mm.
  • the partitions 12 extend laterally on either side of the median plane circumferential P of support 1, and they are regularly distributed over the circumference of said support 1. They have an inclination ⁇ , relative to the circumferential direction, which is close to 90 degrees. Their thickness H is constant. In addition, two adjacent partitions 12 have an opposite inclination relative to the axial direction.
  • junction elements 13 have a thickness e, they are oriented circumferentially and each connect the respective ends of two adjacent partitions 12 which are arranged on the same side of the support 1 (these two ends are closest to one of the other).
  • junction elements 13 are thus successively arranged alternately with on either side of the partitions 12.
  • the partitions 22 of this support element 21 have a thickness H, in their part central, which is greater than their thickness h, at the location of their lateral ends.
  • H is about twice as large as h.
  • the partitions 32 have two lateral parts 34 of same inclination ⁇ relative to the circumferential direction, which are offset circumferentially and which are connected in the central part of said support element 31 by a third part 35 of substantially circumferential orientation.
  • the variation ⁇ of average orientation between the lateral parts 34 and the central part 35 is here of the order of 80 degrees. As the parts 35 are of circumferential orientation, the angles ⁇ and ⁇ are equal.
  • this third central part 35 of very different average orientation that of the two lateral parts, reinforces the buckling resistance of the central part partitions 22.
  • the joining elements 43 which are arranged on one side of the support element 41 have here a circumferential length which is less than that of the junction elements 44, which are arranged on the other side of the support element 41.
  • junction elements 53 are here practically reduced to the contact surface between the two lateral ends 54 in the form of an arc of a circle of the partitions 52.
  • These partitions 52 also include a central connecting part 55.
  • variation ⁇ of average orientation between the two lateral parts 56 and the central part 55 is greater than 90 degrees and is of the order of 110 degrees, which increases the average support density of the support element 51 in its central part.
  • the partitions 62 have rectilinear segments and have three inversions of their sense of curvature. They include two axially oriented lateral parts 64, which are connected, on the one hand, to each other by a central part 65 and, on the other hand, to the elements of junction 63 by lateral ends 66 of average orientation ⁇ close to 30 degrees, by relative to the circumferential direction.
  • the variation ⁇ of average orientation which exists between the two parts of orientation axial 64 of the partitions 62 and the central junction part 65 is of the order of 40 degrees.
  • junction elements 63 can be defined here as being elements of substantially triangular section, which are arranged between two lateral ends 66 adjacent.
  • the latter comprises partitions 72 with central portions 74 of axial orientation which are extended on either side by a lateral end 75, which has a ⁇ orientation close to 30 degrees from the circumferential direction.
  • the joining elements 73 are, on one side of the annular body 70, reduced to the surface of contact between the two adjacent lateral ends 75.
  • the annular body 70 has side walls 76 which shoulder the joining elements 77 on this side, which have a substantially triangular shape.
  • the length of the side walls 76 is notably less than half the length of the central parts 74 of the partitions 72, so that they are not liable to blaze.
  • the side of the support element 71 whose stiffness in compression radial is the highest is to have on the inside of the vehicle. Indeed, we found that the efforts are highest on this interior side of the vehicle.
  • This annular body 80 has axial lateral walls 86 and 87 which shoulder two sides the support element 81, which is also structurally very close to said support element 71.
  • the partitions 12, ..., 92 are 40 in number on the circumference of each support 1, they each have a thickness of 8 mm, and they are spaced from each other by 40 mm. And as said above for each support 1 tested, it has a width 135 mm, a diameter of 440 mm and a height of 50 mm.
  • the base 2 and the top 3 of said support 1 have thicknesses respectively equal to 6 mm and 7 mm.
  • All the supporting elements 7, 11, ..., 91 and the annular bodies 4, 10, ..., 90 presented above are achievable by molding techniques. Preferably, they do not include no undercut part to facilitate axial demoulding.
  • support architecture a support consisting of several rings interconnected in the axial direction of said support, its overall structure being unchanged.
  • Such a ring support is easier to introduce into a tire, due to the inflexible stiffness of its various annular elements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Tires In General (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
EP01100661A 2000-01-12 2001-01-11 Im vulkanisierten Zustand als Notlaufring für Reifen geeignete Kautschukzusammensetzung und solch ein Notlaufring Expired - Lifetime EP1116607B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0000427 2000-01-12
FR0000427 2000-01-12

Publications (2)

Publication Number Publication Date
EP1116607A1 true EP1116607A1 (de) 2001-07-18
EP1116607B1 EP1116607B1 (de) 2008-11-19

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EP01100661A Expired - Lifetime EP1116607B1 (de) 2000-01-12 2001-01-11 Im vulkanisierten Zustand als Notlaufring für Reifen geeignete Kautschukzusammensetzung und solch ein Notlaufring

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US (3) US6818696B2 (de)
EP (1) EP1116607B1 (de)
JP (1) JP4691261B2 (de)
AT (1) ATE414623T1 (de)
DE (1) DE60136579D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6646066B2 (en) * 2002-03-14 2003-11-11 The Goodyear Tire & Rubber Company Rubber composition containing a thermoplastic polymer and tire sidewall component or tire support ring comprised of such rubber composition
JP4384862B2 (ja) * 2003-02-28 2009-12-16 住友ゴム工業株式会社 タイヤ用ゴム組成物およびそれを用いた空気入りタイヤ
JP4342814B2 (ja) * 2003-02-28 2009-10-14 住友ゴム工業株式会社 タイヤ用ゴム組成物およびそれを用いた空気入りタイヤ
JP4102241B2 (ja) * 2003-04-10 2008-06-18 住友ゴム工業株式会社 サイドウォール用ゴム組成物およびそれを用いた空気入りタイヤ
JP4384873B2 (ja) * 2003-05-13 2009-12-16 住友ゴム工業株式会社 ビードエイペックス用ゴム組成物およびそれを用いた空気入りタイヤ
JP4578796B2 (ja) * 2003-10-23 2010-11-10 住友ゴム工業株式会社 タイヤサイドウォール補強層用ゴム組成物
JP2006151028A (ja) * 2004-11-25 2006-06-15 Sumitomo Rubber Ind Ltd タイヤとリムとの組立体およびこれに用いるサポートリング
US20060130948A1 (en) * 2004-12-21 2006-06-22 Sandstrom Paul H Tire support ring
CN106828600A (zh) * 2017-02-21 2017-06-13 汽-大众汽车有限公司 一种仿生抗冲击轻量化结构

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US20020033216A1 (en) 2002-03-21
US20040143067A1 (en) 2004-07-22
US7019066B2 (en) 2006-03-28
US6818696B2 (en) 2004-11-16
JP4691261B2 (ja) 2011-06-01
US20040186209A1 (en) 2004-09-23
ATE414623T1 (de) 2008-12-15
EP1116607B1 (de) 2008-11-19
US6823913B2 (en) 2004-11-30
DE60136579D1 (de) 2009-01-02
JP2001261888A (ja) 2001-09-26

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